Bunch builder for spinning frames



Deg. 22, 1931.. H. A. OWEN BUNCH BUILDER FOR SPINNING FRAMES Filed Jan. 23, 1950 5 Sheets-Sheet 12106115122 flaw/4. 0M m v attoz iiey J Dec. 22, 1931. H. A. OWEN 59 BUNCH BUILDER FOR SPINNING FRAMES Filed Jan. 25, 1950 5 Sheets-Sheet '2 BUNCH BUILDER FOR SPINNING FRAMES Filed Jan. 23, 1930 3 Sheets-Sheet J22 veiiai' Fatented Dec. 22, 1931 'UETEB STATES earner oFricE HENRY A. OWEN, OF FOXBOROUGH, MASSACHUSETTS, ASSIGNOR 'IO DAVIS & IFUBBER MACHINE COMPANY, OF NORTH ANDOVEB, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS BUNCH BUILDER FOR SPINNING- FRAIYIES Application filed January 23, 1930. Serial No. 422,765.

This invention relates to spinning frames and is intended to provide a simple, easily controlled and absolutely reliable means for building bunc es or raised portions of a yarn cop when winding the spun yarn on the bob: bin.

in its essential features the invention is characterized by a plurality of bunch build ing cams that are movably mounted on the usual builder cam, which gives the winding traverse to the ring rail, associated with an actuator, which, in one position, maintains the several bunch cams in active or operative position to operate on the builder arm intermediate of the operative points or swells on the regular builder cam and, in its other position of adjustment, allows the bunch cams to remain inactive as they pass by the point of engagement with the builder arm.

This and other features of the invention will be particularly described in the following specification and will be defined in the claims hereto annexed.

In the accompanying drawings I have illustrated a simple and effective embodiment of the principles of this invention, in which Fig. l is front elevation showing the usu-, al builder cam, builder arm and cam follower with the bunch cams mounted thereon in conjunction with the adjustable actuator which is shown in its inoperative or inactive position.

F 2 is a similar view showing the bunch cam actuator in its active or operative position of adjustment and maintaining the lowermost bunch cam in its active position.

Fig. 3 is a detail view showing the construction of the free end of the weighted loci: latch in relation to the actuator member taken on the plane X-X of Fig. 5.

Fig. l is a detail view showing in perspective the inner or operative end of the lock latch.

Fig. 5 is a side elevation showing the parts of this builde mechanism as viewed from the right hand side parallel with the length of the spinning frame.

Fig. 6 is a similar view showing the builder mechanism viewed from the left side.

Fig. 7 is an end elevation of part of the spinning frame showing the change speed drive connection between the delivery roll and the builder cam shaft.

Fig.8 is a detail view showing the change speed gearing train on the plane 88 of Fig. 7.

9 and Fig. 10 show in section and in elevation, respectively, the means for circumferentially adjusting the bunch cams.

' In the practice of this invention, according to the form illustrated in the accompanying drawings, the builder arm 1 is fulcrumed on the transverse shaft 2 and intermediate of its ends is provided with a cam follower in the form of a revoluble roller 2 while its free end is attached to the builder chain by which ordinarily the downward movement of the ring rail or traverse rail is efi'ected in opposition to the action of the lifter rods and their associated weighted levers (not shown) by which the ring rail is raised. All of this is old and well known construction, as isalso the builder cam 6 provided, in this case, with four high points or swells 6 separatedby intermediate low points or recesses 6 so that the cam follower, by following the contour of the builder cam 6, gives an up and down movement to the builder arm and chain.

The actual form of builder cam illustrated in the drawings is one that is intended for a filling wind, in which, as is well known, the chase or traverse of the building movement includes only a comparatively short portion of the entire length of the bobbin on which the yarn is wound. The

builder cam 6 is secured to the usual driving shaft l, which is driven by any suitable means as a worm gear 5.

At equidistant points around the center of the cam are secured projecting pins 7 which project from the rear face of the cam and on each of which is mounted a movable dog 8 forming a bunch buildingcam, the contour of whose inner side, when the dog is thrust outwardly into active position,

is substantially concentric with the axis of the cam shaft 4: and whose outer faces are provided with one or more swells or high spots 9 that, in the active position of each bunch cam, project beyond the periphery of the low portion 6 of the builder cam,

It will be obvious that as the builder cam rotates in, aclockwise direction, as indicated by the arrow in Fig. 2, each succes-' sive bunch cam 8, when it reaches the lowest point of itsrevoluti-on with the builder cam, willbe in position to have its lowermost or outside edge engage with the cam follower 2 to depress the builder arm while the bunch cam is held or maintained against yielding movement when it encounters the thrust or resistance of the cam follower.

Now, the bunch builder is brought into. action only during the initial-part of building the cop on the bobbin and its object is to effect a series of short, more rapid vibrations or oscillations of the builder movement to, create a relatively narrow outstanding bunch of yarn encircling the base portion of the bobbin, but this action should continue only for a brief period suificient for the building of the bunch when the builder movement should become normal imparting the regular up and down traverse of the ring rail for the full length of the chase until the building of the entire cop is completed. V

The means illustrated in the drawings for maintaining the active bunch cam in operative relationship to'the cam follower of the builder arm as it passes by it comprises a movable actuator member 12 loosely mounted coaxially of the shaft 4 behind the builder cam and its associated bunch cams and carrying at its lower end an actuating pin 13 surrounded by a loose roller 13* which, when the member 12 is raised to up right position as shown in Fig. 2, swinfgs into active position above the path of revolution of the bunch cam pins 7 so, as to. engage the inner arcuate face of the bunch cam as it passes beneath and force or hold the bunchcam downward or outward from the center, as shown in Fig. 2. This exposes the wavelike working face on the outeredge of the bunch ca-m so that it engages the cam fol lower 2? at any desired number of points,

according to the wave outline intermediate of two successive swells 011 the builder cam itself.

There is a bearing bracket 15 secured to an upri ht portion 16 of the frame, which is provided with two forwardly projecting bosses l5 and 15 which, as shown in Fig. 1 and Fig. 2, form permanent stops for liniiting the swinging movement of the actuator arm l2 when it is turned to horizontal position and the swinging movement of this arm when it is turned to upright position. The reduced end of bracket 15 supports the arm 12. c

It will therefore be seenthat as a revolving bunch cam in the course ofits. revolution ap proaches the follower cam 2 while the actuator inember-isinupright or active position it will be forcedv outwardly and maintained there until after it has passed by the cam follower, of the builder ari On the other hand, when the actuator arm is in horizontal position the actuator roller 13 will no longer be in a position to force the lowermost bunch cam that is passing by the cam actuator 2- against the cam follower. Such lowermost cam is free to swing upwarlly under the thrust or resistance of the cam follower 2 so that it remains inactive or inoperative each time that it passes by the cam follower and in such position of the bunch cam actuator the regular building action is effected entirely through the action of the main builder cam 6 imp rting the usual chase to the building of the cop.

To provide means for loclrin the bunch cam actuator member in its active position I have provided a weighted latch arm 20 having weight 21 at its outer end and being provided at its inner, end, as shown best in Fig. 8 and Fig. l, with an inclined face 20 arranged in the path of the projecting tip or depressing nose 12 of the actuator arm 12, so that, when the actuator arm is swung into. vertical position, the engagement of this projectins nose with the lock latch 20 and its inclined race 20 depresses the lock latch allowing this engaged tip of the arm 12 to ride over the upper faceof the weighted latch so that, when the actuator arm 12 reaches the stop 15?, the latch, will swing up into engagement with the notch. 12 formed in the tip member 12 to lock or hold the actuator in its active working position, while this same engagement limits the upward movement of this end of the lock latch.

-The lock latch 20 is also provided with a laterally or forwardly offset inclined lug 20 arranged in the path of revolution of the pivot pins 7, which carry the bunch cams and which project rearwardly from the builder cam through their'respective bunch cams to engage the inclined lug 20', thereby depressing-the lock latch sufiiciently to release its engagement with the nose or tip member 12 of the actuator arm. This re lease of the actuator arm allows'the actuator.

to swing into horizontal position, since it is overbalanced or weighted on the left hand side ofthe center. In this latterposltion the bunch cams no longer become active since there is nothing to hold them'against the upward thrust of the cam follower 2 as they successively engage it in their revolution.

After the lowermost bunch building cam has passed beyond the roller 2 on the builder arm, against which it is held by the roller 13 of the actuator member, the actuator is automatically released and restored to inactive position by release of the lock latch 20. This relase is accomplished by the pin 7 of the next approaching bunch cam which engages the inclined face 20* on the lock latch 20, thereby depressing the same out of locking position and thus allowing the actuator member 12 to drop to horizontal position under.

the influence of its counterbalancing weight. The lock latch then moves upward under the influence of its counterweight 21 against the fixed stop member 15 and is entirely out of, and above, the path of the revolving pivot pins 7.

A further feature of this invention resides in the construction and arrangement for changing the speed ratio between the delivery rolls of the spinning frame and the builder cam movement.

As shown in Fig. 7 and Fig. 8, the cam shaft i or its extension, is driven by means of a worm gear 5 secured to its inner end. This worm gear 5 is driven by achange speed cor iection from the front or delivery roll shit 30 of the spinning frame. On the projecting or outer end of this delivery roll shaft 30 is secured an easily detachable pinion 31, which intermeshes with an intermediate gear or pinion 32 mounted in a slotted bracket 38 that is bolted in the end head of the spinning frame, and which transthe mot-ion the delivery roll shaft to adjacent spur gear 34, which is compounded with a bevel gear 8 1 intermeshing with a bevel gear 35 secured to the upper end of the downwardly extending shaft 36. To th lower end of this shaft 36 is secured the w n 37 which intermeshes with the worm wheel 5 to drive the builder cam shaft .42.

Since the intermediate gear 32 is supported on an adjustable bracket, any desired change or substitution of the pinion 31 be made to vary the speed ratio between the delivery roll shaft 30 and the builder cam, as the whole transmission may be mounted in the end head of the machine where it is readily accessible for change and adjustment. This arrangement constitutes avery convenient and very dependable means of securing any desired speed ratio between the rate of delivery of the roving or yarn and the bunch building traverse of'the copping rail.

In Figs, 9 and 10 are shown a modified form of construction for effecting the circumferential adjustment of the bunch cam with relation to the high and low points of the builder cam. In this case, the pivot pin is in stepped form, having three diameters, the outside or largest diameter at 7 0 being concentric with the inwardly projecting small diameter at 70 and formingthe supporting member inserted in a suitably dimensioned hole in the builder cam 6. The intermediate member 70" of this pivot pin is markedly eccentric to the axis of the pin and forms the bearing support for the bunch cam 8. The large diameter member 70 is peripherally grooved, as shown at 70, to receive the end of a set screw 71, which is inserted through the peripheral face of the builder cam 6. By this construction the pin is circumferentially adjustable in its supporting aperture in the builder cam and at the same time is prevented from sidewise displacement from its seat in the builder cam, as the eccentric portion 70 that forms the bearing for the bunch cam, is moved forwardly or rearwardly to effect circumferential adjustment of its bunch cam, it hastens or retards the cessation of the bunch building action. In order that the retative adjustment of this eccentric pin may be limited an arcuate recess 8 is cut in the wall of the receiving aperture formed in the builder cam 6, and a key 7O projecting from the member-7O travels in this arcuate slot, but limits the rotative movement of the pin by engagement with either shoulder at the end of the slot, This arrangement dispenses with the necessity of removing the bunch cams from their pivot pins to effect circumferential adjustment according tothe illustration in Fig. 1,-but both forms effect the same purpose of changing the timing of the bunch building cam.

What I claim is:

1. In a bunch builder, the combination of a builder arm and its actuating builder cam, a bunch cam pivotally carried by said builder cam and at each revolution swingable into position to yieldingly engage said builder arm in the intervals between the direct actuation of the arm by the builder cam, a bunch cam actuator arranged to be moved into position to prevent such yielding of the bunch cam and thereby cause the bunch cam to actuate the builder arm, and automatically re leasable means for locking the actuator against displacement from its operative position. 2. A device for imparting variable vibrations to a builder arm or the like embracing in combination a revoluble main cam having direct actuatingrelation to the builder arm and having indirect actuating relation therewith through the medium of supplemental cams pivotally mounted on the main cam, said supplemental cams being pivotally mounted on the builder cam to. revolve therewith into successive yieldinglyengagingrelation to said arm,.a' n actuator movable to. and from actuating relationship to said 5; supplemental cams to cause one of them to have unyielding engagement with and thereby actuate said arm, and a locking-latch arranged to automatically engage and retain the actuator when the actuator is moved, to its operative position.

3. The combination with arevoluble build.- er cam and its associated builder arm, of. bunch building camsfpivotally mounted: on the builder cam equal distances from :the axis of revolution, an actuator pivoted for movement to position to engage a face of any appropriate bunch camv when it revolves into position adjacent tov said builderarm and thereby cause such bunch cam to. actuate the build-er arm, and means for limiting the; pivotal movement oi said bunch cams, and means for limitin the pivotal movement of said actuator in. either direction.

4. The combination with a revolubliebuilder cam and its associated builder arm, of bunch building cams pivotally mounted on thebuilderca-m topresent additional builder arm actuating faces, intermediate of the acturating points of the builder cam, to an actuator swingable about the axis of. the; builder cam tooperative position to maintain. the proper approaching bunch cam in arm actuating position, a locking latch mounted in position to allow the actuator when moving to actuating position to depress it and then permit thereturn-of the latch tolocking position.

5. The combination with a revolublebuilder cam and its associated builder arm, of rbunclr building cams pivotally connected with peripheralrportions. of the builder cam and having also pin and slot connections with the builder cam to limit their individual movements, anv actuator arrangedtoforce any bunch cam outward as it approaches the builder arm in its revolution, said actuator being shiftable out of actuating position when released therefrom by further revolution of the builder cam.

j 6. The combination with a revoluble-builder cam and its associated builder arm, bunch building cams pivotally mountedat intervals around the axis ofsaid builder cum to revolve continuously therewith into position to successively form; yieldingengagement I with the builder arm, an actuator normally tending to return to inactive position but movable at will into position. tomaintain the next approaching bunch cam against yielding from its actuating position, means for locking said.- actuator in its actuating position and. meansfor automatically releasing the actuator from" such position. and allowing it to return; to,inactive position. 7 7 The combination with a revoluble-build- 8. The combination with a builder arm, of

a revoluble builder cam acting by its engagement to oscillate said builder arm, one or m'ore'bunch building-cams pivotally connected to saidbuilder cam to revolve therewith, an actuator movable to and from operative position to maintainthe builder cam in operative relation to the builder arm, said bunch cam being circumferentially adjustable to hasten or retard the termination of its operation on the builder arm.

9. The combination with a builder arm, of

a revoluble builder cam for causing to andfro movement of said builder arm, a bunch building cam pivotally connected with: the said builder cam by an adjustable connection permitting the advancement or retardation of the bunch cam circumferentially of the builder cam to vary the time of the bunch building action, and an actuator movable to and from operative position for maintaining said adjustable bunch cam in acting relationship to' the builder arm.

10. The combination with a revoluble builder cam, of a bunch building cam pivotally connected with said builder cam by fulcral" pins adapted to be secured to said builder cam in difierent positions circumferential ly thereof to vary the time of its action, and an automatically released actuator that is movable to operative position to cause said bunch cam to eli'ect a bunch building traverse.

11?. A bunch builder embracingin combinatioma builder cam andits associated buildor arm, a bunch cam movably mounted on said builder cam to revolve continuously therewith into actuating relationship to the builder arm and normally yielding to the pressure of said builder arm, a bunch cam actuator movable at'wil'l'intoposition to prevent the yielding movementof said bunch cam whereby the bunch cam is caused to actua te the builder arm when the actuator is in operative position and to remain inoperative when the actuator is at inoperative position.

12. In a bunch buildezythe' combination ofv a builder cam audits associated: builder arm, a bunch-cam mounted on, and; continuously revolving with thebuilder cam and arranged tolpresent intermediate of the actuating parts of said builder cam a Wave-like contour to yieldingly engage the builder arm, and means movable into one position to prevent such yielding movement When the bunch cam is in engagement with the builder arm thereby causing said bunch cam to actuate said builder arm as it revolves adjacent thereto, and a detent for locking said movable preventing means against displacement.

In Witness whereof, I have subscribed the above specification.

HENRY A. OWEN. 

